Two-point vertical force-velocity profile with model predicted maximal theoretical force




Lipsius, Lauren

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Vertical jump performance is a key component of sporting success. In order to improve jump height, athletic assessments using constrained vertical jumps have been created to inform training decisions. The vertical force-velocity (FV) profile is a protocol that involves an athlete performing a series of squat jumps with multiple loads to create an athlete profile that is used to assess lower limb strength and speed performance and provide training recommendations. Yet, some practitioners avoid force-velocity profiling having expressed concerns about athlete safety during heavily loaded jumps, or the time cost of testing. As a simpler, faster and safer assessment, an unloaded squat jump, and a maximal voluntary isometric mid-thigh pull (IMTP) have been used to provide general training recommendations. These basic tasks have yet to provide the array of FV profile metrics or the accuracy of the training recommendations developed from the standard vertical FV profile protocol. Fortunately, due to the similarity of these IMTP and jump task metrics and the standard FV profile it may be possible to predict the same vertical FV metrics and training recommendations using multiple athlete measures, that include IMTP and jump task metrics and predictive modeling. Therefore, the purpose of this paper is to determine if an unloaded squat jump and an IMTP, alongside other athlete variables, can be used to create an athlete vertical FVP and training recommendation comparable to the standard protocol.



force-velocity, FVP, testing